Interesting post on Google Operating System blog:
If Gmail were integrated with Google Docs & Spreadsheets, it would have a new link next to some attachments that says “Import in Google Docs & Spreadsheets”. This way, you could edit these files online.
Fortunately, if you go to this page, you can find a mail address where you can send your documents to be uploaded in Google Docs. So you can add that address as a contact (let’s say Google Docs), and forward the mails that have .doc or .xls attachments to that address.
You can even add a filter that sends all your .doc or .xls attachments to Google Docs & Spreadsheets:
Has the words: has:attachment doc OR xls
Forward it to: (the email address discussed above)
For the moment, you can upload only files smaller than 500 KB and you can’t upload spreadsheets by mail (but this feature will be added soon).
I’d rather there were some sort of Google file manager to managed all attachments and Docs files in the same place, but it’s a step forward anyway…